COVID-19: City of Winnipeg response and latest updates on City facilities and services COVID-19 : Mesures prises par la Ville de Winnipeg et dernières nouvelles sur les installations et services municipaux

The sticky truth about aphids

August 5, 2021

The dark patch of this sidewalk is where the aphid droppings are.

It’s a sticky problem that we’re stuck with every summer – aphid droppings on roads, sidewalks, vehicles, and anything that’s below the trees.

Typically, much of the sticky substance or honeydew, as well as the aphids themselves, are washed away with regular rainfall, but this year the stickiness is more noticeable due to the lack of significant precipitation.

“Some people refer to the sticky droppings as aphid poo, but it’s not really poo at all,” said Ken Nawolsky, Superintendent of Insect Control. 

Nawolsky said there are no effective treatment or control measures, on a large scale, to reduce the aphid population because they reproduce so quickly.

“All aphids are female and reproduce asexually, giving birth to live young, which can start producing their own young within a few days.”

The dark patch of this sidewalk is where the aphid droppings are.
The dark patch of this sidewalk is where the aphid droppings are.

Aphids are normally wingless unless they get overcrowded, then they start producing winged offspring who will fly to a different part of the tree or to a new tree.

The natural predators of aphids are ladybugs, though it takes a while for ladybugs to build up in numbers large enough to provide some level of control to the overall aphid population.

“Generally speaking, aphids won’t harm trees, though they will cause some leaf damage, early leaf drop, and may reduce overall tree growth,” said Nawolsky.

He says residents can regularly wash the honeydew off with soap and water to prevent the build-up of the sap-like substance. The water will also wash the aphids to the ground. We can expect to see the effects of aphids until the end of August.


Animals and Insects Parks, Trees and the Environment

Was this information helpful?

How can we make this web page better?

Information collected will be used to improve our website. Do not use this form to submit a request for service or information because it will not be forwarded to departments for response. To submit a request for service or information, contact 311.

This form is not intended to collect personal information; however, any personal information you choose to include in your comments is collected by the City of Winnipeg under the authority of section 36(1)(b) of the Freedom of Information and Protection of Privacy Act for the purpose of improving our website and will not be used or disclosed for any other purposes, except as authorized by law. Contact the Corporate Access and Privacy Officer by mail (City Clerk’s Department, Susan A. Thompson Building, 510 Main Street, Winnipeg MB, R3B 1B9) or by telephone (311) if you have any questions about the collection of this information.

Ces renseignements sont-ils utiles?

Comment pourrait-on améliorer cette page Web?

Les renseignements recueillis serviront à l’amélioration de notre site Web. Prière de ne pas se servir de ce formulaire pour soumettre une demande de service ou de renseignements, car la demande ne sera pas transmise au service en question. Pour soumettre une demande de service ou de renseignements, veuillez communiquer avec le 311.

Le présent formulaire ne vise pas à recueillir des renseignements personnels. Cependant, les renseignements personnels que vous choisissez d’inclure dans vos commentaires sont recueillis par la Ville de Winnipeg en conformité avec l’alinéa 36(1)b) de la Loi sur l’accès à l’information et la protection de la vie privée dans le but d’améliorer son site Web et ne seront ni utilisés ni divulgués pour d’autres raisons, sauf dans les cas où cela est autorisé par la loi. Communiquez avec l’agent de l’accès à l’information et de la protection de la vie privée de la Ville par courrier au Bureau du greffier, immeuble Susan-A.-Thompson, 510, rue Main, Winnipeg (Manitoba) R3B 1B9, ou par téléphone au 311 si vous avez des questions sur la collecte de ces renseignements.